Washing machine pump and drive mechanism



June 28, 1960 Original Filed Nov. 30, 1954 WASHING C, PLA-r1' ETAL2,942,446

MACHINE PUMP AND DRIVE MECHANISM '7 Sheets-Sheet 1 JACK F. CLEARMAN BYDEAN H. FREUND A ORNEYS June 28, 1960 Q |I PLAT-r ETAL 2,942,446

WASHING MACHINE PUMP AND DRIVE MECHANISM Original Filed Nov. 30, 1954 '7Sheets-Sheet 2 June 128,V 1960 l, PLAT-r ETAL 2,942,446

WASHING MACHINE PUMP AND DRIVE MECHANISM original Filed Nov. 3o, i954 'Isheets-sheet s Mii., 27 IMI? 3 no 5.4: 36 a9 5o 47 ol [1747 lli'lllll* llgumimi-TL I "'"nml N, L

39 l I I" 36 37 l 'l l o' i '42 I 136 l ,3052 |29 3? 3o Hr 5 34m 7 l:ull I' B61 l I4 l 13 4o l 29 noo l l [i .E

INVENTORS CLARK I. PLATT JACK F. CLEARMAN BY DEAN H. FREUND Mm: @MQ/,W

ATTO R NEYS June 28, 1960 c. l. PLATT ETAL WASHING MACHINE PUMP ANDDRIVE MECHANISM Original Filed Nov. 50, 1954 7 Sheets-Sheet 4 m N m ADNTMN 3 WMM@ E 2 NLER N M IPLF 4 rD ...C T l AX FH T l WKN MA l g v fwn.Mmm 9 CJD I 8 www June 28, 1960 Y c. 1. PLATT ETAL 2,942,446

WASHING MACHINE PUMP AND DRIVE MECHANISM Original Filed Nov. 30, 1954 i7 Sheets-Sheet 5 l l 79 2| sej $4/ JNVENToRs CLARK PLATT JACK F.CLEARMAN Y DEAN H. FREUND A TO RN EYS June 28, 1960 Q PLATT EI'AL2,942,446

WASHING MACHINE PUMP AND DRIVE MECHANISM Original Filed Nov. 50, 1954 7Sheets-Sheet 6 INVENTORS CLARK I. PLATT JACK F`. CLEARMAN BY DEAN H.FREUND ATTORNEYS June 28, 1960 PLATT ETAL 2,942,446

WASHING MACHINE PUMP AND DRIVE MECHANISM Original Filed Nov. 30, 1954 7Sheets-Sheet 7 8v H @ma @me Ill@ lill@ INVENToRs PLAT-r JACK F. CLEAQMANBY DEAN H. FREUND a4/y CLARK l.

ATERNEYS United States Pateflfo MACHINE PUMP AND DRIVE i MECHANISM ClarkI. Platt, Benton Harbor, and Jack F. Clearman and Dean H. Freund, St.Joseph, Mich., assignors, by mesne assignments, to WhirlpoolCorporation, a corporation of Delaware Continuation of application Ser.No. 472,165, Nov. 30, 1954. This application Aug. 8, 1958, Ser. No.753,864

Claims. (Cl. 68-23) This application is a continuation of ourapplication Serial No. 472,165, filed November 30, 1954, now abandoned.Y f

This invention relates to a combined storage and return pump and systemfor automatic clothes washing, rinsing and extracting machines and moreparticularly relates to an improved washing machine and pump structureand drive therefor for driving the pump to pump lluid in a selecteddirection of liow.

Automatic laundry machines for washing, rinsing and drying clothes in aseries of sequential operations as determined by cyclic control meanshave heretobefore been provided with a pumping system to take sudsy washwater from the clothes container 'and pump the sudsy water to a storagecontainer during the extracting and rinsing operations and toreturn thesudsy water to the clothes container for a next succeeding washingoperation.

Such pumping systemshave used two pumps which are usually connected inseriesso that onepump forms aconduit for fluid when the lluid is beingpumped by the other pump in `one direction and vice versa, and usuallyrequire separate motors for driving the individual pumps, orv forseparate" operating mechanisms for selectively driving the pumps fromthe drive mechanism for driving the other parts of the machine.

While such systems have been successful insofar as the storage andreturn of the suds is concerned, they have been quite expensive in thata separaterpump and drive mechanism is provided for each operationl andthe pumps have necessarily been quite inetlicient to enable one pump toserve as a conduit for lluid pumped by the other.

It is accordingly a principal objectr of the present invention toimprove upon automatic laundry Vmachines having a suds' return, byproviding a simple form of suds return pump and an operating and controlmechanism therefor selectively operable to 'etect the pumping of lsudsin'storage and return directions by the use of a single pump.

A further object of the present invention is an improved suds storageand return pump and pumping system requiring a single operating andcontrol mechanism selectively operable to drive the pump in oppositedirections to effect the withdrawal of suds from the laun- Y to provideVvide a combined storage and suds return pumping system driven positionsby the Yoscillatable movement' of the i drive member for the agitator.

2,942,446 Patented June 28,

2 Y Y Still another object of the invention is to provide a combinedstorage and suds return pumping system for automatic washing machines inwhich a single bi-directional pump serves to pump the suds to acontainer for storage and return the suds and is selectively driven inreverse directions through the mechanism for driving the operating partsof vthe machine, and is shifted under the control of thecyclic controlmechanism for the machine l for broken away and with certain other partsin vertical section; Y

Figure 2 is a side elevational view of -the laundry machine shown inFigure 1 and showing the machinerin position to discharge sudsy water toa storage container in the form of a Alaundry tub, and to dischargespent water to said tub for drain; v

Figure 3 is a fragmentary bottom plan view of the operating mechanismfor the machine shown in Figure l; Figure 4l -is an enlarged detailelevational view. showing the pump -and drive and. control mechanismtherefor, with the pump connected to be driven to pump water'in onedirection; Y

Figure ASis a view somewhat similar to Figure Y4 showing the pumppositioned to be drivenY in an opposite direction from the' directionshown Yin Figure 4;

Figure 6 is an enlarged fragmentary vertical for substantially alongline VIVI of lFigure 8;

Figure 7 is an enlarged detail view showing certain details of theselective control mechanism for effecting the positioning` of the pumpin tions;

Figure 8 is an enlarged fragmentary plan view of the drive mechanismlooking substantially along `line VIII-'- f Figure 10 is a'verticalsectional view taken through Y the drive mechanism for the machine inorder to show: certaindetails of the drive to the agitator and ,clothesVcontainer; and

Figure 11 is an electrical circuit diagram of theimaf chine of thepresent invention. I In theembodiment of our invention illustrated inthe drawings, we have shown in -Figure 1 an automatic washing, rinsingand drying machine 10 having a cabinet 11 formingan enclosure for a tub12 havinga pump 14. for

withdrawing. sudsy water therefrom and returning sudsy water thereto.. Aclothes container 15 Tis rotatably mounted'within said tub, and Aisclosed at its Atop .by said cabinet which also forms an enclosurefor thedrive mechanism for the machine.

The tub 12 is shown as being carried on pension links 17--17 encased inrubber" at their-ends carried in sockets 19 in the base 16and insimilarjsocketsY 19a at the upper part of the cabinet 11, for dampingosci latable movement of said tub and base.

Suspended from theV base 1 6 on ahallg'el' bracket a motor 43 serving asthe drive motor for the machine. A

sectional `V view taken through the pump and pivotal support thereitsreversely d rivenposicontrol and i a floating base l 16 suspendedfrom-the top portion ofthe cabinet onfsus gear casing 23 for theoscillatable drive mechanism for the machine is likewise suspended fromthe base 16 on bolts 20 threaded into studs 21 welded to base 16,maintaining said gear casing in fixed parallel spaced relation withrespect to the base 16.

The gear casing 23 is of a form similar to that shown and described inPatent No. 2,610,498, dated September 1,6, 1952, and is in two parts, alower part 24 serving as a casing for oscillatable drive gearing foroscillatably driving an agitator 25 in the clothes container or basket15, and an upper part 26 of which serves as a cover for said lower part,a support for certain operating and control mechanisms for the machineand as a bearing support for certain drive shafts therefor, as willhereinafter more clearly appear.

An oscillatable drive shaft 27 is shown as being rotatably carried inthe gear casing 23 in a boss 29 depending from the lower part 24 thereofand as extending upwardly through a boss 30 projecting upwardly from theupper part 26 thereof and as extending along and as being journaledwithin a rotatable drive sleeve 31. The sleeve 31 extends within astationary sleeve 32 which extends upwardly from a hollow center post33. The hollow center post 33 forms a closure for the central part ofthe bottom of the tub 12 and extends upwardly from the bottom of the tub12 and has the sleeve 32 carried therein and projecting upwardlytherefrom within a hollow upright support 34 for the clothes basket 15.The sleeve 31 has the clothes container or basket 15 supported on itsupper end for spinning the same upon rotation of said sleeve as in theaforementioned Patent No. 2,610,498.

The agitator 25 is carried on the upper end of the shaft 27 and issuitably secured thereto to be oscillatably driven thereby uponoscillatable movement of said shaft.

The sleeve 31 extends downwardly along the shaft 27 and is rotatablydriven from a drive sheave 35 freely mounted on the lower end portion ofsaid sleeve through a clutch 36. The clutch 36 is herein shown as beinga friction disk clutch having an annular friction surface 37 engagedwith the upper face ofthe sheave 35 'by a tension spring 42 connectedwith a clutch yoke 39. The clutch yoke 39 is operated by a solenoidcontrolled shifting mechanism 40 to effect engagement or disengagementof the clutch 36. The shifting mechanism 40 includes a rectilinearmovable shifting bar 41, as in the aforementioned Geldhof and RingerPatent No. 2,610,498.

The motor 43 is shown as having an upwardly projecting motor shaft 45,having a motor pulley 46 suitably secured to the upper end. The hangerbracket 44 may be mounted on the base 16 for adjustable movement withrespect thereto to take up tension on a drive belt 47 in any well knownmanner, and is no part of the present inven tion so need not herein beshown or described. The drive belt 47 is shown as being trained aboutthe motor pulley 46 to and around the drive sheave 35 for spinning thebasket or clothes container 15 upon engagement of the clutch 36, andaround a drive sheave` 49, pinned or otherwise secured to the upper endof a drive shaft 50 for the mechanism for oscillatably driving the shaft27 and the agitator 25. The shaft G is shown as being journaled in aboss 52 projecting upwardly from the upper part 26 of the gear casing 23and as extending downwardly within said gear casing and forming a drivefor the oscillatable drive mechanism for oscillatably driving theagitator drive shaft 27.

The drive from the -driveshaft 50 to the oscillatable drive shaft 27 islike that shown in the Geldhof and Ringer Patent No. 2,610,498 andincludes generally a pinion 51 on the shaft 50 within the gear casing 23meshing with and driving a gear 53 having a crank 54 thereon. A drivelink 55 connects the crank with a gear sector 56 for oscillatablydriving the same. The gear sector 56 is keyed or otherwise secured to avertical shaft 57 to oscillatably drive said shaft 57. The shaft 57 hasa carrier 59 for the shifting mechanism 40 carried on the upper endthereof on the top of the casing 23. Two solenoids 60 and 61 are carriedin said carrier and are selectively energizable for operating either theshifting bar 41 for the clutch 36 or a shifting bar 63, for shifting apinion 64 into engagement with a clutch vor pin 65 on the vertical shaft27 for oscillatably driving said shaft from the pinion 64. The pinion 64is shown in Figures 9 and l0 as meshing with and being oscillatablydriven from the gear sector 56.

The solenoids 60 and 61 are shown as having depending armatures 69 and70, respectively, shown as being forked at the lower ends thereof andcarrying transverse pins 71 and 72, respectively, for shifting therespective shifter bars 41 and 63 as in the Geldhof et al. Patent No.2,610,498.

The shifter bar 41 has a cam face 73 on the end thereof engaged by anoperating rod 74 for the yoke 39 and clutch 36. The rod 74 is shown asextending along opposite sides of the shifter bar 41 and as beingengaged with the cam face 73 of said shifter bar as by tension spring42.

The shifter bar 41 is rectilinearly shifted in a forward or backwarddirection in accordance with the energization of the solenoid 60 in theoscillating carrier 59, as in Patent No. 2,610,498 previously mentioned,and is shifted in the same manner the shifter bar 63 is shifted uponenergization of the solenoid 61. Inasmuch as the two shifter bars areshifted inthe same manner and inasmuch as the bi-directional pump 14 ofour present invention is operated by the shifter bar 63, the manner ofshifting the j shifter bar 63 need only herein be shown and described indetail.

The shifter bar 63 is shown in Figure 9 as having a recessed cam face 75formed therein along which rides a roller 76 carried between thefurcations of the bifurcated upper end portion of a vertical shiftingpin 77, extending within the gear casing 23 and slidably guided therein.The shifting pin 77 is shown as having a shifting yoke 79 securedthereto and having engagement with the undersurface of a shifting collarS0, herein shown as being formed integral with the oscillatable drivepinion 64 (Figure l0). The shifting pin 77 is biased in adownwardposition to effect engagement of the oscillatably driven pinion 64 withthe clutch pin 65 by means of a compression spring 81 encircling theshifting pin 77 and interposed between the undersurface of the wall ofthe top portion 26 of the gear casing 23 and the shifting yoke 79. Thusupon movement of the shifter bar 63 in a direction, which in Figure 9 isshown as being to the left, the roller 76 will roll up along theinclined cam face 7S and disconnect the oscillatably driven pinion 64from the clutch vpin 65 on the agitator drive shaft 27. Upon movement ofshifter bar 63 from the disengaged position of the clutch pin 65 to theright to Ithe position shown in Figure 9, the spring 81 will force theroller 76 to move, downwardly along the inclined cam face 75 to effectengagement of the pinion 64 with the pin 65 to drive the oscillatableagitator drive shaft 27.

The shifter bar 63, near its end opposite from the cam face 75, isprovided with two vertically spaced longitudinally extending slots 83and 84 vertically offset one from the other and having the adjacent endsthereof joined by a short vertically extending slot 85. The pin 72extends through and slidably engages either of the slots 83 or 84depending upon the position of the armature 70 of the solenoid 61. Whenthe cam bar 63 is lin the position shown in Figure 9, the solenoid 61 isenergized and oscillatable movement of the carrier 59 will reciprocablymove the pin 72 along the slot 83 and have no effect in shifting theshifter or cam bar 63. When, however, the solenoid 61 is deenergized,the pin 72 will drop downwardly along the slot into the slot 84. The pin72 will then be in position to engage the left hand end wall of slot `84and move the shifter bar 63 to the left upon oscillatable movement ofthe carrier 59, causing the roller 76 to ride upwardly along theinclined face 75 and lift the pin 77 to shift the oscillatably drivenpinion 64 out of engagement with the clutch pin 65 on the agitator driveshaft 27 and disconnect the drive to the agitator. Upon energization ofthe solenoid 61, the pin 72 will move upwardly along the slot -85 intoposition to engage the right hand end of the slot 83 and shift theshifter bar 63 tothe right to the position shown in Figure 9, to effectan Voscillating drive tothe agitator 25.

Referring now in particular to the bi-directional pumping means of theinvention for effecting the pumping of suds from the tub 12 for storageand the return of suds from the storage container to the tub forwashing, effected by operation ofthe shifter bar 63, the pump 14 isshown in Figure 6 as being pivotally carried on the lower half 24 of thegear casing 23 on a lug 87 projecting outwardly therefrom. A-s hereinshown, a generally U-shaped bracket 88 having its legs extendinghorizontally, is

pivoted on `its lower leg on a shouldered lbearing collar 89 carried ona suspension bolt 90 similar to the suspension bolts 20, suspending thegear casing 23 from the base 16. The upper leg of the -bracket 88 isalso mounted on the bolt 90 and abuts at its lower end a spacer sleeve91 and at its upper end a stud 92, The bracket S8 is in turn shown asbeing bolted or otherwise secured to a vertical leg 93 of a bracket 94,having spaced horizontal legs 95 projecting therefrom in Ian oppositedirection from the horizontal legs of the U-shaped bracket 88. The legs95 are drilled to extend around and form a support for -a sleeve portion99 of a -housing 100 for the pump 14, and are suitably retained thereto,as by a snap ring`98.

The sleeve portion 99 is shown as having spaced bearings 101 and 102 fora vertically extending pump drive shaft 103, having a drive pulley 104secured to the upper end thereof as by a set screw 105. The lower end ofthe pump drive shaft 103 has an impeller -107 secured thereto androtatably mounted in a pumping chamber 109 in the pump housing t100. Theimpeller 107 may be made from rubber or any other suitable material, andhas a plurality of pumping vanes 110 moving within the pumping chamber109 for pumping liquid, depending upon the direction of rotation of saidimpeller, through either one of two oppositely extending ducts 111 or112 leading from the casing 100 generally tangentially to the peripheryof the Iimpeller'107. p

The duct 111 has a conduit 1:13 connected with and leading from a sump(not shown) in the bottom of the tub 12 for withdrawing liquidtherefrom. .T he duct 1'12 is shown as having connection with a pipe orflexible conduit 115 connected with a two-way valve 116 (Figure 1)energized by a solenoid 117 (Figure ll) and having two flexible conduits119 and 120 leading therefrom.

The conduit l119 is shown in Figure 2 as leading to one tub 121 of alaundry tub, the drain for which may have a stopper placed therein forthe storage of sudsy water during the extracting and rinsingloperationsof the washing machine 10, t Y

The conduit 120 may lead to another tub 122 of the laundry tubv andconnected to drain to discharge rinse or spent water directly to' drain.v

Conduits 123 and124 are shown as being connected from hot and lcoldwater lines 12311 and 12411 directly to a duid mixing valvel (not shown)for mixing the hot and `Coldwater toprovide a tempered water lforwashing underA the control of a hot water control solenoid 126 and amixed water control solenoid 127, as shown in Figure ll of the drawings.The mixing Valve itself may be of any well known form, and need notherein be shown or described further since it forms no part of thepresent invention. i

Referring now in particular to the drive for the pump 14 for driving`the rotor 107 thereof in one direction to supply sudsy water to the tub12, and in an opposite direction to pump sudsy waterinto the storage tub121 or to the drain .through the tub 122,A depending upon the positionof the two-way valve 116", the pump pulley 104 is shown as beinglgrooved for engagementV with the belt 47 to be driven therefrom uponpivotal movement ofthe housing in one direction about the axis of thebolt 90, and is also shown as having a relatively wide cylin#drical'drive face -129 extending-below the -grooved portion thereof forengagement with a resilient cylindrical Adrive V100 and yieldablyholding the pulley 104 in one" driven position or another is shown ascomprising an overcenter toggle linkage 131 loperated by the cam orshifting bar 63. The -over-center toggle linkage comprises va movabletoggle member 133 formed by the bracket 88 and comprising an arm 134projecting from and formed integrally with the upper horizontal leg ofthe bracket 88 and extending into a downwardly opening slot 135 formedin the shifting bar 63 adjacent the outer or right hand end thereof.(See Figures 8 and 9.)' The vertical leg of the bracket 88 is providedwith two ver'- -tically spaced arms 136 having lugs 137 extending withinthe ends of vertically spaced compression springs 139. The springs 139are'mounted on their opposite ends on spaced lugs 140 projecting fromfixed brackets 141 and facing the lugs 137. y A

The over-center toggle linkage 131 formed by the movable bracket 88 andthe lugs 137 and the fixed brackets 141 and lugs 140, together with thecompression springs 139 mounted therebetween on the lugs,137 and 140,isk operated by shifting movement ofthe shifter'bar l63, controllingoperation of Ithe agita-tor. Upon shifting movement of the shifter bar63 to the right from the dotted line position to the solid line positionshown in Figure 9, the arm 134 and movable toggle Ymechanism 133 will beImoved in a clockwise direction to move'the springs 139 over-center toyieldingly bias the drive'face 129 of the pulley 104Yinto engagementwith the friction surface of the pulley 49 to be driven therefrom, asshown in Figure 5 and by the solid lines in Figure S Upon movement ofthe shifter bar 63 to the left, to disengage the drive to the agitatorshaft 27, the arm 134 and movable toggle mechanism 133 will be moved inarcounterclockwise direction to engage the pulley 104`with the belt 47,to be driven therefrom as shown in Figure 4 and the ldotted line'position shown in Figure S: When in this last mentioned position, pinion64V is moved out of engagement with the clutch pin 65, to disconnect thedrive to the agitator shaft 27. Y

It should here vbe noted from Figure 9 that whenV the springs'139 havebeenmoved over-center to position thewpump in either one of itspositions lto be driven by the friction surface 130 or 'by the 'belt 47,that the. end of the arm 134 is moved midway between the ends of thedownwardly opening slot by the snap action of the springs 139 and isfree from the ends of said slot to accommodatethe springs 139 to biasthe pulley 104 into Aengagement with the drive'member.

Referring nowV tor-the operation of the 4machine and'l the electricalcontrol circuit illustratedv in Figure 11, a timer unit generallyindicated by reference character 145 is provided, which may be of Vanysuitable type and is no part of the present'invention so need not hereinbeshown or describedV further.v The timer unit com- 7 determinedsequence to effect the washing, rinsing and extracting cyclic operationsof the machine.

A hand switch 161 is provided to initially close an energizing circuitto the various operating parts of the machine and is operated by a knob163 to initiate the operation of the machine and settable for thewashing cycles desired. Current is conducted to the electricallyenergizable parts of the machine through a main line conductor 164connected with the hand switch 161 and a second main line conductor 165.The conductor 164 may be connected through the hand switch 161 to lighta time switch lamp 16S upon closing of said hand switch.

The knob 163 is rotated to a position corresponding to the desiredlength of washing time and is then depressed to close the hand switch161. The switches 158 and 159 will close to complete circuits through aswitch arm 166 and a lower contact 167 of a float switch and energizeeither or both of the solenoids 126 and 127 to open the mixing valve andadmit water to the clothes basket 15, it being understood that theenergzation of the solenoids 126 and 127 depends upon the setting of atemperature control switch 128. During this till period, the timer motor153 is deenergized and remains deenergized until the float (not shown)of the float switch moves the switch arm 166 of said float switch out ofengagement with its associated lower stationary contact 167 of saidlloat switch into engagement with upper stationary contact 169 of saidoat switch.

It should here be noted that a water level switch 269 is provided todetermine the level of water in the tub 12. In the position of saidwater level switch 269 shown in Figure ll one level of water is attainedin the tub 12 and a circuit is completed through the lower contact 167and switch arm 166 during filling of the tub and through the uppercontact 169 and switch arm 166 when the tub is filled to the requiredlevel.

When the switch arm 269 is in its upper position a circuit is completedthrough a lower contact 167a and a switch arm 166a during filling of thetub and through the switch arm 166e and a contact 169a when the tub isfilled to the required level. The water level switch 269 is of a wellknown form and is no part of the present invention so need not herein beshown or described further.

When a predetermined water level has been reached within the tub and theswitch arm 166 moves upwardly into engagement with the stationarycontacts 169, the electrical circuit to the hot and mixed water controlsolenods 125 and 127 will be broken and the flow of water to the clothescontainer 15 will stop.

The timer motor 153 will then be energized through the upper contact 169of the float switch. Timer switch 155 will be closed at this time. Themotor 43 will also be energized through the upper contacts of the oatswitch. The agitator control solenoid 61 will be energized throughthetimer switch 155. Energization of the solenoid 61 will bring the pin72 upwardly along the slot 85 into position to engage the forward orright hand cnd of the slot 83 and move the cam or shifter bar 63 to theright and accommodate the roller 76 to Vmove downwardly along thesloping cam surface 75 into the position shown in Figure 9 to engage theclutch for driving the oscillatable agitator shaft 27 from the pinion64. At the same time the arm 134 will be engaged by the left hand end ofthe slot 135 (Figure 9). This will pivot the pump and movable toggle 133from the position shown by dotted lines in Figure 8 to the solid lineposition shown in this figure. The pulley 104 will then be driven by thefriction surface 130. This will drive the impeller 187 of the pump 14 ina counter-clockwise direction and pumping will be from the two-way valve116 to the tub 12.V When this occurs, the timer switch 154 is open andthe solenoid 117 for the two-way valve is deenergized. In this positionof the two-way valve, the valve is open to the drain conduit 120 and nopumping will occur. The

78 operation of the agitator 25 will then continue for a period of timeand according to the setting of the timer by the operator. Y

After a predetermined advance of the time, the timer switch 156 willclose. The timer switch 155 will remain closed. The control circuits tothe timer motor 153, the main machine motor 43, and the agitator controlsolenoid 61 will then be completed through the timer switches 155 and156 regardless of the position of the oat switch.

At the end of the washing period, the timer will ad- Vance to open theswitch 155 and deenergize the agitator control solenoid 61. The switch156, however, will remain closed and the main machine motor 43 and thetimer motor 153 will continue to operate. Upon deenergization of thesolenoid 61 the pin 72 will drop down wardtly along the slot intoposition to engage with the left hand end of the slot 84 and effectmovement of the agitator cam bar from the position shown in Figure 9 tothe left to the position shown in Figure 4.

Shifting of the cam bar 63 to the left will disengage the clutch foroscillatably driving the agitator drive shaft and will engage the righthand end of the notch with the arm 134. This will move the arm 134 ofthe movable toggle 133 and said movable toggle and the pump drive pulley104 from the position shown by solid lines in Figure 8 to the positionshown by dotted lines in this figure to be driven in a clockwisedirection by the belt 47, the cam bar 63 snapping the toggle linkagemechanism over-center and the springs 139 biasing the pump drive pulley'into engagement with the belt 47, to be driven thereby. The pump is thenpumping from the tub 12 to the two-way valve 116. The timer switch V154also closes vto energize the solenoid of the two-way valve. This willopen said valve to the conduit 119 connected with the suds storage tub121 and suds will be pumped to said tub.

Upon the continued advance of the timer and the pumping of water fromthe tub 12 for storage, the switch arm 166 will engage the stationarycontact 167 of the lloat switch. The timer switch 157 also will beclosed to energize the solenoid 60 to effect the movement of the cam bar41 into the position shown in Figure 5 to effect engagement of theclutch 36 and effect the spinning of the clothes container or basket 15.The solenoid 61, however, will remain deenergized and the pump 15 willcontinue to rotate in a direction to pump water to storage. Theextracting operation may now take place. After a predetermined period ofthe extracting operation, which may be a period of two minutes, thetimer cam 146 will advance to open the switch 154 and deenergize thesolenoid 117 for the two-Way valve 116. The pump 14 will then pump tothe drain tub 122. During this period, the cam 152 will come intoposition to effect intermittent closing of the switch 160 andenergzation of the mixed water control solenoid 127 and the intermittentspraying of the clothes in the clothes container or basket 15. Uponcontinued advance of the timer 145, the timer switches 154, 155, 156,157, 158 and 159 will open, decnergizing all of the electrical circuitswith the exception of the mixed water controlrsolenoid`127 which will beenergized through the upper contact of timer switch 160. The tub willthen be filled with warm water to the level determined by the floatswitch'and the position of the water level switch 269. When the tub hasbeen lilled with warm water, the float switch will open the electricalcircuit to lthe mixed water control solenoid 127. Assuming the waterlevel switch 269 isin the position shown in Figure l1, the switch arm166 of the float switch will also engage the upper contact 169 to closean energizing circuit to the main motor 43 and the timer motor 153. Thetimer 145 will then commence to advance. The switch will also close toeffect the energzation of the agitator control solenoid 61. The pin 72will then engage the right hand end of the slot 83 and move the cam bar63 to its extended or right hand position shown in Figures 5, 8 and 9.This will also effect operation of the overasia-14s the pulley 104 withthe friction drive surface 130, t0 effect the drive of the impeller 107of the pump 14, in a direction to supply water to the tub 12.- At thisposition of the cycle of operation of the timer switch, the timer switch154 will be open and the two-way valve solenoid will be deenergized andsaid valve will be in position to supply water through the drain hose tothe drain tub 122. The pump 114,` however, will do no pumping since thedrain hose is-out of water and the direction of pumping is to the tub12.

After the rinse period, the timer 145 will advance to open the switch155 and deenergize the agitator solenoid 61. The cam bar 63 will then bemoved to the left by engagement of the pin 72 with the left hand end ofthe slot 84 to disengage the pinion 64 from the clutch pin 65 on theagitator drive shaft 27. The same movement of cam bar 63 will pivot thepump 14 in position to engage the pulley 104 with the belt 47 to drivesaid pulley therefrom, as shown'in dotted lines in Figure 8 and solidlines in lFigure 4. The pump 14 will then be driven in a clockwisedirection to pump water from the tub 12 to the two-way valve 116. Thetimer switch 154, however, will still be open. The solenoid 117 of thetwo-way valve 116 will thus be deenergized and said valve will be inposition to direct water to the drain tub 122.

saidg` agitator, a driving member, a member drivenV by said drivingmember, oscillatable gearing driven by saidk last mentioned memberfor-oscillatably driving Vsaid agitator shaft, a bi-directional pumphaving uid connection with said clothes container and with a storagecontainer,

' said pump having a casing mounted for rocking move- Upon 'thecontinuedV advance of the timer 145, the

switch 157 will close to energize the extractor control solenoid 60. Thepin 71 will then move the cam bar 41 to eiect the engagementV of thespin clutch 36 `and spinning of the sleeve 31 and clothes container orbasket 15;" At the beginning of this period the intermittent spray cam152 willf'then'come into operation to elect-afplurality of sprays oftheclothes in the clothes container 15. The pump 14 being in operationto withdraw water Vfrom the tub' 12 will pump the'water removed fromtheV return suds from the storage tub 121 to the tub 12, theV controlyknob 163 is ,turned to a predetermined positionV designated' on thedial-as a'suds position. This will close the timer switch 156 andthe-timer switch 154 to energize the rnotor'llll,v the timermotor 153and the solenoid 117 for the two-'Way :valve vconnecting 'said `valvewithV 'the storage tub 121-nV Thetimerjswitch '155`s 'also' closed andthe agitator f solenoid 61yis ienergized. The pump 14 is thus intheposition shownin Figure'S'and the pulley 104 is driven from thevfriction surface 130. The pump is thus rotatingin a counterclockwisedirection to pump sudsy water from the storage tub 121 back tothe tubV12. As the water in the tub rises to open the contact 167 of` the floatswitch and move the .movable switch cam 166 4of said lioat switch intoengagement withl the contact 169, the two-way valve solenoid 117 will bedeenergized and the valve will be open to the drain hose. Y The timermotorf153 willY then advance the timer out of the suds return positionVthrough the Washing cycles previously described.- Y Y It will beunderstood that modifications and variations of the present inventionmay be effected without departing from the spirit and scopeof the novelconcepts thereof. f

We claim as our invention:

l. In a combined storage and Vsuds returnpumping sis' systemparticularly adapted for washing machines having ment vabout an axisparallel'to the axis of Ysaid agitator shaft and having an impellerwithin said casing and a shaft for driving said impeller, anoscillatable carriage ocillatably driven by said oscillatabledrivegearing, a rectilinearly movable bar selectively moved by said carriagefor ,pivoting said pump to' effect aY drive to said shaft and impellerinone direction Yfrom said driven memi ber in one direction of movementof said bar andtfrom said driving member in a reverse vdirection inanother direction of movement of said bar, electrically energizablemeans on said carriage s electivelyenergi'zable to elect the movement ofsaid'bar-in directions to drive said pump shaft and impeller from eitherof said members, a two-way valve having connection with said pump andhaving connection with said storage container for suds and with a drain,electrically energizable means to selectively move said valve todischarge either to storage or drain, said electrically energizablemeans for effecting the reverse drive of said pump and the movement ofsaid valve to discharge either' to storage or drain being ener-V gizedby the cyclic rcontrol forthe washing machine dependent upon the cycleof operation thereof.

' 2. In a combined suds storage and suds return pumping system forwashingmachines and the like having a clothes container having an toscillatable agitator therein,

an oscillatable agitator shaft for driving said agitator,

a motor, means driven ,by said motor' for oscillatably driving`said"agitator vshaft comprising a drive member, adriven member driventhereby and oscillatable gearing driven'fby said vdriven member,abbi-directional pump having iuidconnection:` with said-Vclothes"contai`ner and with'a separate storage container and having animpeller v and an impeller shaft anda pump drive member on said shaftfor driving the same, a rock'ablemounting for said pump, mounting saidpump for rockable movement about an axis parallel to the axes' of saidimpeller shaftrand agitator shaft, and means for rocking said pump toposition said pump drive member to be driven in one direction fromsaiddrive member and driven in a reverse direction from saiddriven-member comprising a rocking carriage rockingly driven by saidoscillatable' gearing, a rectilinearly movable bar, velectricallyenergizable means on said carriage selectively operable to electmovement of said bar in opposite directions, and an over-center togglevlinkage operated by said bar and connected with said rockable-mountingfor Yrocking said rockable mounting and pumpto move said pump drivemember into engagement with'either of saidY driving or saiddrivenmembers Y landfor yieldably` holdingsaidY pump ,drive member to beldriven from the selectedldriving or driven-member.'

3. In a combined sudsm storage andsuds return pumping system lforwashing machines andthelik'e-having a clothes container having anoscillatable agitator therein, an oscillatably driven lagitator shaftforVoscillatably driving said agitatorfa motor, a sheave, a belt driven-bysaid motor for driving'said sheave,`bscillatable gearing driven by saidvsheave and having driving connections with said agitator shaft foroscillatably driving the same, ya bidirectional pump having huidAconnection with said clothes and impeller, a rockable mounting forV saidcasing mounting said casing for rocking movement about an .axis

" parallel to the axis of said pump shaft, an oscillatable carrieroseillatablyrdriven by said oscillating gearing, a rectilinearly movablebar operatedby said Vcarriertt move in opposite directions, electricallyenergizable means on said carrier for effecting movement of said bar inopposite directions as selected, `and an over-center toggle linkageconnected with said casing and having a biasing spring therein, saidovercenter toggle linkage having an arm engaged by said rectilinearlymovable bar for rocking said casing to lbring Asaid pulley intoengagement with said belt and to maintain said pulley in engagement withbelt by the over-center position of said spring and effect a drive tosaid pump in one direction, rand for rocking said pump casing in anopposite direction upon opposite movement of said bar to bring saidpulley into engagement with said sheave to be driven-therefrom in anopposite direction, for reversing the direction of rotation of saidimpeller. Y

4. In a combined washing and extracting machine having a cabinet, a tubcontained therein, a clothes container within said tub, an agitatorWithin said clothes container, an agitator shaft for oscillatablydriving said agitator, a motor, oscillatable gearing for oscillatablydriving said agitator shaft, two spaced pulleys, onecoaxial with theaxis of said agitator shaftv and the other vspaced therefrom, a beltfordriving said pulleys from said motor, a drive mechanism driven by theother of said pulleys for oscillatably driving said oscillatablegearing, the improvements comprising a bi-directional pump reverselyoperable to pump sudsy water into said clothes container and into aseparate storage container having a casing pivoted for rocking movementabout an axis parallel to the axis of said agitator shaft and `having animpeller therein and a pump shafttfor driving the Vsame having a pulleyon the outer end thereof, means selectively operable to effect the driveto'said pump in reverse directions as selected, comprising a stationarytoggle bracket, a movable toggle Amember connected with said pump casingIfor, pivoting the` same, a Vspring` connected between said togglemember and bracket and moved over-center upon movement offsaid togglemember inropposite directions and holding said pulley in selectedpositions intoengage ment with said belt Vor said drive member, andmeans selectively operable by said Aoscillating gearing for moving saidmovable toggle member in opposite directions as selected, andpositioning said pumpin its selected driven position.

5. In a combined storage and suds return pumping system `particularlyadapted for washing machines having a clothes container having anoscillatable agitator therein, an oscillatable agitator shaft fordriving said agitator, a driving member and a driven member driventhereby, oscillatablel gearing driven by said driven member foroscillatably driving said shaft, a reversible pump having tiuidcommunication with said clothes container and witha separate storagecontainer Vand having a casing` mounted for rocking movement about anaxis parallel to the axis of said shaft, an impeller within said casing,'apump shaft forsaid imf peller, a drive member for said shaft on theoutside of said casing for driving said impeller in reverse directionsas selected to pump fluidin a selected direction, an oscillatable memberdriven by said oscillatable drive gearing, a rectilinearly guided bar,means driven by said oscillatable member and selectively 'operable toeffect rectilinear movement of said bar in one directon'when said meansare in one position and in anothendirection when said means are inanother position, and an over-center toggle mechanism connected to saidpump and engaged by said bar upon rectilinear movement thereof forVmoving said pump in one direction upon movement ofrsaid bar in onedirection and holding said drive member for said pump into engagementwith `said driving'member, and for moving said pump in an oppositedirection upon an opposite direction of movement of said bar. andholding said pump drive member in engagement with said driven member forreversing the direction'of 'rotation of `said 12 impeller and thedirectionmof the flow of fluid through said pump.

6. In a combined storage and suds return pumping system particularlyadapted for clothes washing machines having a clothes container havingan oscillatable agitator therein, an agitator shaft for driving saidagitator, a gear casing beneath said clothes container, a rst pulleyhaving a shaft journaled in said casing and extending therein andoscillatable drive gearing driven by said shaft for oscillatably drivingsaid agitator shaft, a reversible pump having tluid communication withsaid clothes containerand with a separate storage container and having acasing rockingly mounted on said gear casing for movement about an axisparallel to the axis of said agitator shaft, a motor, a belt for drivingsaid pulley from said motor, said pump having an irnpeller, a pump shaftfor driving the same and a ,pump drive pulley thereon to be driven fromsaid pulley or said belt, said first pulley having a groove therein anda friction drive surface spaced from said groove, and means operated bysaid oscillatable drive gearing for moving said pump pulley intoengagement with said belt to be driven thereby in one direction and intoengagement with said friction drive surface of said first pulley to bedriven thereby in an opposite direction, said means comprising a togglelinkage mechanism comprising a stationary toggle base on said casing, amovable toggle member connected with said pump casing for pivoting thesame upon movement thereof, a spring connected between said toggle baseand mov able toggle member, a rectilinearly guided bar, meansselectively operable to effect rectilinear movement of said bar, anoperative connection `between said bar and said movable toggle memberYfor moving the same in opposite direction as selected vand positioningsaid spring overcenter in either direction of movement of said bar.

7. in a combined storage `and suds return pumping system particularlyadapted for washing machines hav ing a clothescontainer havinganagitator therein, an oscillatable agitator shaft for driving saidagitator, a gear casing beneath said clothes container, oscillatabledrive gearing within said casing for oscillatably driving saidagitatorshaft, a driven shaft extending within said casing foroscillatably driving said gearing, a reversible pump having fluidcommunication with said clothes container and with a separatestoragecontainer and rockingly mounted on saidcasing, a pulley on theoutside of said shaft for driving the same, a motor, a belt driven bysaid motor for driving said pulley, a slidably guided bar,an oscillatingcarriage driven by said oscillatable gearing, means selectively operabletoconnect said carriage with said bar to slidably move said bar inopposite directions as selected, and an over center toggle linkageoperated by said bar for moving said pump to be driven in one direction-bysaid belt and in an opposite direction by said pulley` comprising astationary toggle base on said gear casing and spaced from said pump, amovable toggle member connected with said pump for pivotally moving thesame about an axis parallel to the axis of said agitator shaft, a springconnected between said toggle base and said movable toggle member andmoved past center upon movement of said toggle member to hold said pumpin its selective driven positions, said bar having a downwardly openingslot, and an arm extending from said movable toggle member within saidslot and being spaced `from the ends of said slot when said pump is ineither of its two driven positions and being engaged by said bar uponrectilinear movement thereof to move said pump into its selected drivenposition.

8. In a combined washing, rinsing and extracting machine, a cabinet, atub within said cabinet, a clothes container mounted within said tub forrotatable movement with respect thereto, `an agitator within saidclothes con tainer, a gear casing within said cabinet beneath said tub,an agitator drive shaft journaled in said casing and extending upwardlytherefrom for driving said agitator.

a sleeve encircling said agitator drive shaft and connected with saidclothes container, a clutch for effecting spin.- ning movement of saidclothes container, a motor, a shaft journaled in said gear casing inspaced relation with respect to said agitator driveshaft, a rst pulleyon said shaft, a second pulley coaxial with the axis of said agitatordrive shaft and connected to drive saidsleeve through said clutch,gearing Within said casing driven by said first pulley and including agear oscillatably driven thereby, a second gear on said agitator shaft,a second clutch for connecting said gear Vwith said agitator shaft, anoscillating carrier on the outside of said gear casing oscillatablydriven by said oscillatable gear, a clutch shifter bar guided forslidable movement with respect yto said casing and having operativeconnection with said trst clutch for shifting the same upon rectilinearmovement of said bar, a second clutch shifter bar slidably guided insaid casing and having operative connection with said second clutch foreffecting a drive to said agitator drive shaft from said gear mountedthereon, individual electrically energizable means on said carriageselectively energizable to effect the shifting of said bars to engageand disengage said clutches in a predetermined cycle of operation,areversible pump having i fluid communication with said clothescontainer and with vand into engagement With said belt for effecting thedrive of said pump in an opposite direction.

9. A combination washing, rinsing `and drying machine in accordance withclaim 8, wherein the over-center Y V14 said bar upon shiftingmovementthereof to pivot said casing and move said spring pastcenterrineither direction of movement of said bar to selectively effect the Ydrive of said pump in opposite directions.

10. In a combined suds storage and suds return pump-y l: 'i

ing system for washing machines and the like having a clothes containerand having an oscillatable agitator therein, an oseillatably driven`agitator Shaft forV said agitator, a motor, a sheave, `a belt driven bysaid motor for driving said sheave, oscillatable gearing drivenby saidsheave and having driving connection with said agitator shaft foroscillatably driving the same, a bi-directional pump having uidconnection with said clothes container and with a separatev storagecontainer and -having a casing, a reversely operable impeller in saidcasing operable to pump liquid in opposite directions upon rotation ofsaid impeller in reverse directions, a shaft for said impeller, a pulleyon said impeller shaft for driving said shaft and impeller, a rockablemounting for said pump casing mounting said casing for rocking movementabout an' axis parallel to the axis of said impeller shaft, anoscillatable carrier, means driven by saidoscillating gearing .foroscillatably driving said carrier, a rectilinearly movable barreciprocably moved by said carrier in reverse directions, electricallyenergizable means on said carrier for effecting movement of said bar inopposite directions as selected, and an `arm connected between said pumpcasing and bar for effecting pivotal movement of said rockable mountingand pump casing in opposite directions upon rectilinear movement of saidbar inA opposite directions to effect movement of said rockable mountingand pump casing in a direction to engage said pulley with said belt todrive 'said` impeller shaft, and in an opposite direction todisengagelsaid Vimpeller pulley from -said belt, and to engagesaidpulley with said sheave to reverse the direction `o f rotationthereof. l

References Cited inthe illeof y'this patent UNITED STATES PATENTSSanders Dec. 27, 195,5

